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Chemical Engineering - Chemical Engineering Thermodynamics

Exercise : Chemical Engineering Thermodynamics - Section 4
11.
The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the __________ temperature.
critical
Boyle
inversion
reduced
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will
increase
decrease
remain unaltered
increase or decrease ; depends on the particular reaction
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
All gases above its inversion temperature, in a throttling process will show
a heating effect.
no change in temperature.
a cooling effect.
either (a) or (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
First law of thermodynamics is mathematically stated as
dQ = dE + dW
dQ = dE - dW
dE = dQ + dW
dW = dQ + dE
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
Pick out the wrong statement.
Surface tension of a substance vanishes at critical point, as there is no distinction between liquid and vapour phases at its critical point.
Entropy of a system decreases with the evolution of heat.
Change of internal energy is negative for exothermic reactions.
The accentric factor for all materials is always more than one.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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